body {
    margin: 0;
    padding: 0;
    font-size: 16px;
}


a {
    color: #666666;
    text-decoration: none;
    outline: none;
}

ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

li {
    margin-bottom: 5px;
}

.banxin {
    width: 1440px;
    margin: 0 auto;
}

.leftfex {
    float: left;
}

.rightfex {
    float: right;
}

.clear {
    overflow: hidden;
}

.top-jl {
    overflow: hidden;
}

.top-jl span {
    font-size: 40px;
    font-weight: 600;
}

.ul-list li {
    font-size: 30px;
    height: 50px;
    line-height: 50px;
    margin: 0 10px;
}

.nr-kong {
    height: 300px;
}

.nr-kong h1 {
    height: 300px;
    line-height: 300px;
    text-align: center;
    font-size: 60px;
}

.nr {
    width: 900px;
    height: 600px;
    margin: 0 auto;
    border: 3px solid blue;
    border-radius: 10px;
}

.nr img {
    width: 150px;
    border-radius: 50%;
}

.nerde-img {
    width: 150px;
    margin: 0 auto;
}

.nerde-img p {
    width: 170px;
    text-align: center;
    font-size: 18px;
}

.aihao {
    margin: 0 auto;
    width: 800px;
    height: 280px;
    border: 1px solid #108ff790;
    border-radius: 10px;
}

.aihao p {
    font-size: 20px;
    margin-top: 30px;
    text-align: center;
}